RADIATION-CURABLE COATING COMPOSITION AND COATING

The invention provides a coating composition having: (A) 30-80 % by weight of a urethane oligomer having three types of moieties, a polyether and/or polyolefin backbone, an aromatic group having one or more alkyl substituents, and reactive termini, the three types of moieties being connected via ure...

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Bibliographische Detailangaben
1. Verfasser:	CHAWLA, CHANDER P
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVES CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES FILLING PASTES GLASS INKS JOINING GLASS TO GLASS OR OTHER MATERIALS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY MINERAL OR SLAG WOOL MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PHYSICS POLISHES SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	The invention provides a coating composition having: (A) 30-80 % by weight of a urethane oligomer having three types of moieties, a polyether and/or polyolefin backbone, an aromatic group having one or more alkyl substituents, and reactive termini, the three types of moieties being connected via urethane and/or urea linkages, the aromatic group being connected to a urethane and/or urea linkage via the one or more alkyl substituents; (B) 15-65 % by weight of one or more reactive diluents, each diluent being terminated with at least one end group capable of reacting with the reactive terminus of (A); optionally (C) 0-10 % by weight of at least one photoinitiator; optionally (D) 0-5 % by weight antioxidant; and optionally (E) 0-30 % by weight adhesion promotor. The invention also relates to a coating composition in which the urethane oligomer (A) has the general formula (1): R3-¢L-R2-NH-CO-O-R1!y, wherein: R1 is a reactive terminus, R2 is an aromatic group having one or more alkyl substituents, wherein the urethane (O-CO-N-) group and L are attached to the one or more alkyl substituents, R3 is an oligomer based on a polyether or polyolefin or a mixture thereof, L is a urethane and/or urea linkage, and Y is 2 or greater. The invention further provides coatings made by curing the coating compositions.